Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Priapula - priapulans see Phylum Priapulida Delage & Hérouard, 1897
     Family Priapulidae Gosse, 1855
       Genus Priapulus Lamarck, 1816
         Priapulus caudatus de Lamarck, 1816 - priapulid worm